Delftse Hout – Grote Plas

Best wind

Unverified. No checked current exact source publishes safe wingfoil compass sectors for this enclosed, tree-edged lake. Select a side-on/returnable direction at the named surf island and reject any sector with a wind shadow or downwind drift toward swimmers or the opposite bank: https://windsurfingdelft.nl/ https://supdelft.nl/contact/

Season

Unverified for wingfoiling. No checked exact source establishes a best wind month window or seasonal permission. The official swim-water monitoring season is 1 May-1 October, but that is not a foil season; the lake has repeated warm-season blue-green-algae problems and currently carries a negative swimming advisory, so check the live notice: https://www.zwemwater.nl/?id=1920 https://register.zwemwater.nl/zwr/api/files/304416

Water

Tide-free enclosed freshwater. The Grote Plas averages about 2.5 m but has former sand-extraction pits reported to about 7 m, so it changes from shallow margins to deep water; flat water can become locally choppy and wind is affected by the tree-lined shore: https://delftsewaterloop.nl/en/science/water-quality-in-the-grote-plas-blue-green-algae/ https://wingfoiltips.com/spots/netherlands/south-holland/delftse-hout-grote-plas/

Experience

Beginner candidate only in suitable wind and with local guidance. The original exact wing submission calls the enclosed flat lake beginner-friendly, while the active on-site windsurf club confirms it is training water; no checked current source publishes independent wingfoil permission, rescue cover or a foil-specific launch assessment: https://wingfoiltips.com/spots/netherlands/south-holland/delftse-hout-grote-plas/ https://windsurfingdelft.nl/

Hazards

Abrupt depth change into former sand-extraction pits, deep-water self-rescue, tree/topographic wind shadow and gusts, swimmers, SUP/row/windsurf users, and recurring blue-green algae are material. The official listing currently shows a negative swimming advisory, and the 2020-2024 profile documents repeated multi-week algae warnings/advisories; verify current water status before any contact: https://delftsewaterloop.nl/en/science/water-quality-in-the-grote-plas-blue-green-algae/ https://www.zwemwater.nl/?id=1920 https://register.zwemwater.nl/zwr/api/files/304416 https://supdelft.nl/contact/

Parking & access

The on-site operator directs drivers to P6, Bospad 1, where free parking is available on either side before the barrier; the surf island is reached on foot/bike beyond it. This does not establish overnight/camper permission or vehicle access past the barrier: https://supdelft.nl/contact/

Live wind

Local guides